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M 3.9 Earthquake 45 km S of Sand Point, Alaska

Source: USGS · Alaska

A magnitude 3.9 earthquake was recorded by USGS near 45 km S of Sand Point. On the USGS Earthquake Hazards Program scale, M3.9 is classified "Minor". Among the 1,706 earthquake reports Areazine has published, this M3.9 event ranks stronger than 44% of them (rank #925 by magnitude).

Read this earthquake report in 30 seconds

Magnitude
M 3.9
USGS class
Minor
Location
45 km S of Sand Point
Archive rank
#925 of 1,706
Source
USGS
Published
July 27, 2026
MINOR

Stronger than 44% of the 1,706 earthquake reports in Areazine's archive, weaker than 924 others.

Record status: a point-in-time USGS detection. Aftershocks, revised magnitude, and felt-report data continue to update on USGS's own event page after publication.

What Happened

A magnitude 3.9 mb earthquake struck 45 km south of Sand Point, Alaska, on June 21, 2026, at 12:34:33 UTC. The event was recorded at coordinates 54.9355°N, 160.3828°W with a depth of 35.7 km.

Location Details

The earthquake was located 45 km south of Sand Point, Alaska. The intermediate depth of 35.7 km places it between 20 km and 70 km.

Impact Assessment

No felt reports were recorded. There was no tsunami advisory (tsunami field = 0) and no alert level was issued.

What You Should Know

Earthquakes of this magnitude (M 2.5-3.9) are often felt but rarely cause damage. Minor aftershocks remain possible.

Source

USGS Event Page

Original source: USGS Official Notice ↗

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Comparable nationwide notices (length or severity timing) 8

Two Areazine-derived peer sets for this USGS earthquake report: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.

Similar body length

Nearest notices by article body length (727 characters here).

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Similar severity timing

Same severity (low) notices issued closest in time to July 27, 2026.

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Questions & Answers

Common questions about this USGS earthquake report.

What magnitude was this earthquake? ▾
A magnitude 3.9 mb earthquake occurred 45 km south of Sand Point, Alaska, at a depth of 35.7 km.
What does a magnitude 3.9 ("Minor") earthquake mean? ▾
The USGS classifies M3.9 as "Minor" on its Earthquake Hazards Program scale. Events in this range are often felt near the epicenter and can cause minor damage to vulnerable structures, though widespread damage is uncommon.
How does this compare with other earthquakes Areazine has reported? ▾
This is the #925 strongest of the 1,706 earthquake reports in Areazine's archive by magnitude, stronger than 44% of them and weaker than 924 others.
Was Sand Point likely to feel this earthquake? ▾
This event was centered 45 km S of Sand Point. Shaking intensity falls off sharply with distance from the epicenter and depends on depth and local geology, so check the USGS "Did You Feel It?" report for this event for real felt-shaking data rather than assuming from magnitude and distance alone.

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